Carbureter.



E. E. MORYAND.

CARBURETER.

APPLICATION FILED JULY 26, 191-5.

I Patented Feb. 15,1916.

2 SHEET$-SHEET| INVENTOR; Y may: Mrmi 61/ A TTOR NE Y.

WITNESS E. E. MORAND. CARBURETER.

APPLICATION FILED JULY 26,1915. 1,172,031. Patented Feb. 15,1916.

2 SHEETS-SHEET 2.

WITNESS 5, IN VENTOR,

W fidmarzdi'fllorani ATTORNEY.

UNITED STATES PATENT OFFICE.

f EDMUND E. MORQAND, OF WESTFIELD, MASSACHUSETTS.

CARBURETER.

Specification of Letters Patent. Patented 14 b, 15, 1916,

Application filed July 26, 1915. Serial No. 41,84 6.

To all whom it may concern Be it known that I, EDMUND E. MoRANo,

a citizen of the United States of America,

and resident of Vestfield, in the county of- Hampden and State of Massachusetts, have invented certain new and useful Improvements in (larburet'ers, of which the following is a full, clear, and exact description.

This invention relates to improvements in cz'irbureters for internal combustion engines closing of the shutter which controls the intake of air into -the mixing chamber..

Another object is to provide an auxiliary carbureter chamberwith the necessary or desired provisions for the intake of fuel from the main carbureter liquid chamber and for the regulation of the air supplied thereinto so that even when the main carbureter is throttled or closed there may be, independently thereof, a supply of vaporized fuel to the engine so that the latter need never be stalledbut may run at a. moderate speed or at a very low speed as desired; theprovision of the supplemental carbureting means also rendering it possible to obtain the additional capabilities for adj ustments to employ carbureters more advantageously than usual in the use of carbureters as heretofore devised; and a furtherob]ect of the 1nvent1on s to improve in the matter of details of construction the general construction of the device.

The invention is described in conjunction with the accompanying drawings and is set forth in the claims. 4

In the drawings :Figure 1 is a plan View of the carbureter; Fig. 2 is a front elevation of the same; Fig. 3 is a cross section taken vertically and as seen on line 33, Fig. 1. Figs. 4 and 5 are horizontal cross sectional views representing the detailed construction ofparts to be hereinafter referred to. Fig. 6 is a partial vertical cross section on line 6+6, Fig. 1.

In the drawings, A represents the main liquid fuel chamber or fioat chamber of the carbureter, the gasolene inlet to which en- I tering at the rear side being not shown.

B represents a vertical chamber concentrically within the liquid chamber, and separated therefrom excepting as connection is made by the small transverse passage (1 and upstanding jet tube or nipple b. The chamber B by suitable provision and construction of casings is continued upwardly above the chambered body A, thereby providing in the upper portion B of the centralized; and

the elongated chamber provision for the mixture of the gasolene or other liquid fuel with the air. The upper end of the chamber B, B is formed with'a lateral opening 0 forming the portfor'a passage Within the tubular extension G, for connection in the usual way with the cylinder or the manifold for a plurality of cylinders. At the front of the upper portion B of the central chamber is an opening surrounded by a short annular hub (Z, such hub having a wall (I at its outer end or face provided with apertures (Z D represents a cup-shaped shutter having apertures f in its front' wall to register with those in the aforementioned end wall (Z and having its cylindrical flange-likev portion f which fits about'the annular hub or wallrsurrounding the air entrance opening into the mixing chamber a series of V-shaped teeth. g. The cup shaped and toothed shutter is retained 'on the spider-like front portion of the upstanding casing in which the mixing chamber is inclosed by the screw h which forms the pivot for the shutter.

' A cup-shaped cap closes the upper end of the central vertical chamber B this cap comprisingthe circular top plate E, and the tubular portion or elongated flange E which fits down into the upstanding part of the mixing chamber casing. The said cap,

seento be of elongated cup-shape, is revoluble within the parts forming the support and bearing therefor for opening and throttling the carbureter, it having ports or apertures of considerable 'size in its depending annular portion. 1 p

The top E of the cap has the lever extention E by means of which the carbureter is operated; and the top E of the capwhich is outwardly extended in the form {of a flange to overhang the wall of the chamber B is provided with a series of V-shaped teeth '2: which are in mesh with the teeth 9 of the shutter D, so that when the cap E is revolubly moved to operate the carbureter tomore or less open or fully close .the same, the shutter will be concurrently and proportionately moved. v

In the central chamber between the cap E and the jet tube 7), is a centralized axially vertical hub F made as a central part of a spider. This hub has an axial bore therethrough formed with a spline groove or slot 7 j at one side.

i the upper endof the jet tube 6. This needle valve for adjustment.

G represents a block havingopposite 1ater-.

ally extending members 70 is, preferably provided with knurled rollers k The block is provided with a depending sleeve m of comparatively small diameter, but of considerable length, extended and guided down within the spider-supported hub F, and is provided with a rib. mk whichv 1s engaged in the slot groove or spline way 71- in-the centralized hub-like part f; :1

H represents the needle valve, the tapered" lower end of which coa'cts with the orifice at valve is screw threaded centrally and vertically through the block G, and is extended through and below the lower end of the sleeve m, and has a knurled head at its up- 1 per end for conveniently turning the needle The sleeve-intermediately of its length is provided with a shoulder forming enlargement m between which and the guiding bushing 0 the spiral spring- 2 is applied in compression for-exerting a downward, constant, force to the sleeve, the needle valve, and the block G, of which latterthe sleeve'is an extension and through j which f' the needle valve is screw threaded. -'The shoulder in? of the sleeve be: ing diametrically greater than the central opening in the ushing 0 which form's the bearing for the'sleeve, the-bushing is made split on the plane of its axis, so that after the block, sleeve, and needle valve have been brought to place in the carbureter in the relationshown in Fig. 3, the matched parts of the two-part sleeve,-which is externally screw threaded,may be screwengaged in the sufliciently large aperture therefor inthe members of the block G have impingements on, or rather they are impinged by the came when the latter are moved under therevoluble motion of the cap. The needle valve H being properly .ad:

) justed in its thread engagement through the block and in its extension through the sleeve continuation of the .block relativelyto the orifice of the jet tube 6 will under theraising of the block'by the opposing are shaped cam.

plates, have its lifting -;-movements always" truly in the line of "the axis of such needle valve-the described provisions being such that there cannot be any degree of sidewise. tlltlng or swinging of the valve. By turning both of the screws 1- r the grade of the cam plates may be varied,tobe more or less H steep,fo'r assuring under a given. revoluble movement of thecap the desiredlifting and lowering of the needle valve. A1'1d as made clear through the-engagements of the teeth a of the flanged to of the cap .withl-the,

teeth 9 ofthe annular anged portion of the shutter D, the air ingress into themixing chamber may always be proportioned to the ingress of the liquid or other fuel'drawn into -.'-'such chamber; and the. apertures in the cap flange E also correspondingly. open and close the outlet way through-the engine con nection member C or manifold.

Ofi'fsetfrom and supported by the main float chamber A of the carbureter is a supplemental cylindrical casing M of very much smaller diameter. This chamber is preferably formed openat its bottom and provided with a closing, but removable, screw plugs thereat. It has a closing top wall it provided with an upstanding hub 25 It is made near,

but at a suflicient distance above its bottom' with a horizontal partition a: dividing the casing M intoupperand lower chambers 4 and w. The passage w? of: small diameter connects the liquid chamberin the carbu-- reter body A'with the lower chamber to in the supplemental casing. The upstanding jet tube or nipple mis screw engaged through and upstanding above the partition 1/. and

forms communication from the lower chamber w to the upper chamber '12. Suitably above the partition areone or more air 1ntakeports '0 and quitenear the top of the.

casing are-one or more air intake ports vi. 3

The needle valve P screwengages through @The centrally apertured cup shaped cap y j l is fitted about the aforementioned"upstanding hub t and has its depending annular flange-like and casing-encircling portion provided with one orvmore apertures 1 for more or. less opening and fully closing the a1r lntake openings '0 The nut 2 screws on the upstanding hub t and holds in place and 1 also tensions the cup shaped shutter "7 From the intermediate part of the upper chamber '0 in the-supplemental casing M, a

pipe has communication, which pipe also extends to and connects into theengine connection inemberC.

The apparatus is seen to be, one comprising a main carbureter anda supplemental carbureter.

v Both departments of the carbureter maythe hub provided top wall t and coacts with mthe mouth portion of the jet tube as.

operate conjointly under any positioning or adjustment for regulation respectively thereof; and when the main carbureter is entirely throttled, the engine may be run at moderate or comparatively slow speed on the gas intake and independently of the main carbureter; and under any proper adjustment of the supplemental carburetor, the engine is prevented from becoming stalled from throttling down of the main carbureter.

I clai'in 1. In a carbui'eter, the main inclosedliquid chamber and a central vertical chamber therewithin, having a lateral tubular extension for connection with the engine, and having a lateral opening plrovided withjan apertured end wall, a passage connecting the chambers, and a movably carried needle valve for controlling said passage, a circular cap member for closing the top of the said central chamber and revolubly movable relatively thereto and having an outwardly extended flange provided with gear teeth, a revolubly movable shutter having valve apertures in its front, adapted to have open and closed relations to the apertures in the end wall of said opening, and comprising an annular flange having gear teeth at its edge portion in mesh with the teeth of said cap, means for revolubly moving the cap and therewitlrthe shutter, and means actuated by the revoluble cap 7 for proportionately moving the needle valve.

2. In a carbureter, the main inclosed liquid chamber and a central vertical chamber therewithin, formed with an open top, and

lateral openings, one having a tubular ex-r tension for connection with the engine, and

the other having a hollow hub provided with an apertured end wall, and said central chamber having therewithin' a vertical upwardly open tubular jet, the lowerportion of which is in connection with the main chamber, a circular cap member for closing the top of the said central chamber and revolubly movable relatively thereto and having an outwardly extended flange edgewise provided with teeth, means for revolubly moving said cap, a cup shaped shutter'having.

valve apertures in its front, adapted to have open and closed relations to the said apertures of the hub'end wall, and having its cylindrical flange-like portion surrounding the hubprovided at-its'edge with teeth in mesh with the teeth of said cap flange, a needle valve for opening and closing said jet tube, and meansactuated by the revoluble cap means for raising and lowering the needle valve proportionately with the movement of the apertured shutter.

3; In a carbureter, a main inclosing liquid chamber and'a central. vertical chamber therewithin having a lateral tubular exten a lateral opening provided with an apertured end wall, and having a passage conextending and slidably engaged within the said axially vertical hub and means for preventingrotation of the sleeve relatively'to' the hub, a spring for imparting a downward force to said sleeve, a needle valve screw engaged through said sleeve and extended to a controlling relation to the said passage connecting said chambers, means for imparting revoluble movements to said cap and the cams carried thereby, a shutter tor openmg and closing the apertures in the wall of the lateral opening of the central chamber, and means actuated by the cap for conjointly operating said shutter.

4. In a carbureter,.a main'inclosing liquid chamber and a central vertical chamber therewithin having a lateral tubular eXtension for connection with the engine having a lateral opening provided with an aper tured outer wall, and having apassage connecting said chambers, and the central chamber having an axially vertical tubular hub centrally therewithin, provided with a spline way, a cap for closing the top of the central chamber and revolubly -movable relatively thereto and provided, with concentric opposed are shaped cams thereon, a block, having opposite laterally extending mem bers 1n impingement on said cams, and provided with a depending sleeve extending and slidably engaged within the said axially vertical hub, having a rib engaged in said spline way, and formed with a shoulder above the hub, a split bushing screw engaged through the top of the cap and forming a slide bearing for the sleeve, a spring -in-compression between the split bushing and the shoulder of said sleeve, a needle valve screw engaged through said block and sleeve and extended to. a controlling relation to the said passage connecting said chambers, means for imparting revoluble movements to said cap and the cams carried thereby, a shutter for opening and closing the apertures in the lateral opening of said casing and means actuated by the cap for conjointly operating said shutter.

5. In a carbureter, a main inclosing liquid chamber and a. central vertical chamber therewithin having alateral tubular exten sion for connection with the engine, having a lateral opening provided with an aper- -tured end wall, and having a passage consion for connection with the engme, having necting said chambers, and the central chamthereon with concentric "opposed are shaped.

v inclined cam plates, each having its low end screw engaged through its liigh end and 'from intermediately of supplemental casing toconnection with thesaid engine connection fastened to the cap and havin an adjusting bearing on the top of the cap, a block hav ing laterally extending members in impingement on'said ca rn plates,-and provided with i a depending sleeve extending and slidably engagedwithin the said axially vertical huband means for preventing rotation of the sleeve relatively tothe hub, a,spring for imparting, a downward force to said sleeve, a needle, valve screw engagedthrough said block and sleeve and extended to a controllin relation to the said passage connecting said chambers,- means for imparting revoluble movements to said cap and the cams carried thereby, a shutter for opening and closing the apertures in the wall. of the "lateral opening of the central chamber, and

means actuated by the caps-for operating said shutter conjointly therewith.

6. A carbureter, comprising a main liquid chamber and a chamber having passaged connection from the liquid chamber thereto, and a needle valve for regulating said. passaged connection, regulated means for the admission of air into said second chamber,

and a conduit'extended from communication with the second chamber for connection with the engine, and a supplemental chambered casing adjacent the main liquid chamber, supported thereby, having a chamber dividing partition-near its bottom, having a transverse passage leading to the lower chamber thereof from the main liquid cham her, having a jet tube upstanding above said partition concentrically within the supplemental casing, having an air intake open-- ing through its side below the top of the jet tube,tand having an air intake opening.

in the'upper portion thereof, a shutter for regulating the opening and closing of the latter'opening, a needle valve for opening and' closing the jet tube, and a pipe leading conduit. 7.. A, .carbureter,

chamber, a mixing chamber therewithin,

means for regulating the entrance of liquid fuel and'a-ir into the mixing chamber, and a conduit extended from communication with the mixing chamber for connection. with the engine, and a supplemental'chambered cas ing adjacent the main liquid chambergsup' ported thereby, having a chamber dividing its bottom,

the height of said tom of the casing,

comprising a main liquid the chamber in'said casing-above the partipartition above its bottom,having a transverse passage leading'to the lower chamber therein fromthe mainfliquid chamber, having a ,jettube upstanding concentrically within the supplemental casing above the passage leading to the lowergportion thereof;

having an air intake opening through its side below the top of the jet tube, and having an air intake openingthrough its side at theupper portion ther'eofga cup shaped cap and shutter rotatively= fitted about the top of the'supplemental chamber for regulating the opening and closingof the latter engaged through said ca closing the jet tube,

. 8. A carb'ureter,

comprising a main liquid chamber,

a mixing chamber therewithin,

means for regulating the entrance of liquid I fuel and air into the rhixing chamber, and

a conduit extended from communication with the mixing chamber for connection with the engine, and a supplemental cylin drica]. casing adjacent the main liquid cha1nber, supported thereby, constructed open at portion thereof from the main. liquid. chamber, and having a chamber-dividing partition in its lower portion, but above said passage, a jet tube open" at top and bottom,

screw engaged through :Sfitld partition and upstanding concentrically within the supplemental casing above the partition, and said casing having an air intakeopening through i the jet tube,and havlng an air intakeopening through its its side below the top of and having a closing top wall provided with an upstandinghub, having a transverse passage leadinginto the lower.

casing, a nut screwing on the hub above,,

and engaging,

top wall and 'coacting .with.;said jet tube, a screw plug for removably closing the botand a'pip'e leading from tion to connection with the engine connec- 'tion conduit.

I Signed by. me at Springfield, Mass, in

the said cap, a needle valvescrew-engaged 1 through the hub provided 

